عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TLpq303800202
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Fluctuations for galaxy formation from inflation models
نام عام مواد
[Thesis]
نام نخستين پديدآور
D. S. Salopek
نام ساير پديدآوران
J. R. Bond
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
University of Toronto (Canada)
تاریخ نشرو بخش و غیره
1989
مشخصات ظاهری
نام خاص و کميت اثر
1
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
Ph.D.
کسي که مدرک را اعطا کرده
University of Toronto (Canada)
امتياز متن
1989
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
The theory of fluctuations for galaxy formation from chaotic inflation models is extended to include the effects of (1) multiple scalar fields, (2) curvature coupling of scalar fields to gravity, (3) nonlinear evolution of long wavelength metric and scalar fields, and (4) stochastic generation of initial conditions. Multiple scalar field models may generate more large scale power than the standard Cold Dark Matter (CDM) model if the Universe undergoes two inflation epochs giving a CDM+ plateau spectrum. If the scalar fields pass over a mogul in the potential, then CDM+ mountain fluctuation spectra may be generated. The chaotic inflation scenario may be housed within a grand unified theory (GUT) framework through a coupling of scalar Higgs field to curvature, usd-\xi R\phi\sp2/2usd. If the curvature coupling is chosen large and negative, usd\xi\approx -2 \times 10\sp4usd, then a more natural value of scalar field self-coupling usd\lambda \approx 0.05usd gives the observed level of fluctuations. Radiative corrections to the Higgs potential are small and the reheat temperature is typically high yielding successful baryogenesis. Using Hamilton-Jacobi theory, a general formalism is presented for following the nonlinear evolution of the metric (scalar, vector, and tensor modes) and scalar fields for fluctuations with wavelengths greater than the Hubble radius. Employing an expansion accurate to first order in spatial gradients, the classical momentum constraint of the Arnowitt-Deser-Misner (ADM) formalism may be integrated exactly without recourse to linear perturbation theory. It is shown how nonlinear effects of the metric and scalar fields may be included in Starobinski's formulation of stochastic inflation. Stochastic noise terms in the long wavelength evolution equations model quantum fluctuations that are assumed to become classical at horizon crossing and which then contribute to the background. usdTusd = ln(Ha) proves to be a useful time variable because it enables one to solve for scalar field quantum fluctuations within the horizon in an inhomogeneous background. A Fokker-Planck equation is formulated which describes how the probability function evolves in time. Analytic Green's function solutions are obtained for a single scalar field self-interacting through an exponential potential.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Particle physics
موضوع مستند نشده
Pure sciences
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
D. S. Salopek
مستند نام اشخاص تاييد نشده
J. R. Bond
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
